22273748 has 48 divisors (see below), whose sum is σ = 46792704. Its totient is φ = 9076320.

The previous prime is 22273721. The next prime is 22273753. The reversal of 22273748 is 84737222.

22273748 is nontrivially palindromic in base 6.

It is a super-2 number, since 2×22273748² = 992239699935008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57965 + ... + 58347.

It is an arithmetic number, because the mean of its divisors is an integer number (974848).

Almost surely, 2^22273748 is an apocalyptic number.

22273748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22273748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23396352).

22273748 is an abundant number, since it is smaller than the sum of its proper divisors (24518956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22273748 is a wasteful number, since it uses less digits than its factorization.

22273748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 22273748 is about 4719.5071776617. The cubic root of 22273748 is about 281.3613466611.

The spelling of 22273748 in words is "twenty-two million, two hundred seventy-three thousand, seven hundred forty-eight".